| | Dulce, NM | Klamath, CA | United States |
| Population | 2,607 | 946 | 329,725,481 |
| Female Population | 50.0% | 53.7% | 50.5% |
| Male Population | 50.0% | 46.3% | 49.5% |
| Median Age | 34 | 48.9 | 38.4 |
| space3 | | | |
| Population - 2010 | 2,795 | 893 | 309,327,143 |
| Population - 2000 | 2,623 | 651 | 285,036,114 |
| Population - 1990 | 2,438 | 827 | 251,960,433 |
| Pop. 2000 to Now | 0.9% | 14.0% | 15.6% |
| Pop. 1990 to Now | 8.6% | -10.3% | 30.8% |
| space4 | | | |
| Population Density | 203.6 | 76.3 | 93.4 |
| Land Area | 12.8 | 12.4 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Dulce, NM | Klamath, CA | United States |
| Age 0 to 4 | 6.4% | 5.1% | 5.9% |
| Age 5 to 9 | 5.9% | 7.6% | 6.1% |
| Age 10 to 14 | 10.0% | 7.0% | 6.6% |
| Age 15 to 17 | 5.2% | 5.4% | 3.9% |
| Age 18 to 20 | 1.4% | 1.8% | 4.0% |
| Age 21 to 24 | 8.9% | 2.9% | 5.2% |
| Age 25 to 34 | 12.9% | 8.0% | 13.8% |
| Age 35 to 44 | 7.1% | 10.1% | 12.9% |
| Age 45 to 54 | 15.6% | 12.8% | 12.6% |
| Age 55 to 59 | 11.4% | 5.0% | 6.7% |
| Age 60 to 64 | 2.9% | 8.1% | 6.3% |
| Age 65 to 74 | 9.2% | 11.7% | 9.6% |
| Age 75 to 84 | 1.5% | 12.4% | 4.5% |
| Age 85 and over | 1.6% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Dulce, NM | Klamath, CA | United States |
| White | 1.2% | 49.9% | 59.4% |
| Black | 0.2% | 0.0% | 12.2% |
| Asian | 1.1% | 0.2% | 5.6% |
| Native American | 79.2% | 32.3% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.3% | 0.0% | 0.4% |
| Two or More Races | 2.1% | 3.3% | 3.2% |
| Hispanic | 15.9% | 14.3% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Dulce, NM | Klamath, CA | United States |
| Married Population | 28.4% | 47.4% | 49.8% |
| Currently Married | 26.1% | 44.5% | 48.0% |
| Married but Separated | 2.3% | 2.9% | 1.8% |
| Single Population | 71.6% | 52.6% | 50.2% |
| Never Married | 48.1% | 22.8% | 33.8% |
| Divorced | 17.2% | 15.4% | 10.8% |
| Widowed | 6.3% | 14.5% | 5.6% |
| space5 | | | |
| Household Size | 3.88 | 2.67 | 2.60 |
| Households | 665 | 352 | 124,010,992 |
| Family Households | 440 | 240 | 80,755,759 |
| Married couple, w/children | 3.4% | 20.0% | 30.5% |
| Married couple, no children | 47.3% | 43.3% | 42.9% |
| Non Family Households | 225 | 112 | 43,255,233 |
| Single householder, w/children | 35.5% | 25.0% | 15.8% |
| Single householder, no children | 13.9% | 11.7% | 10.8% |